Cast
Jack McNaughton
Benson - Scotland Yard man
Alfie Bass
Albert Brewer (uncredited)
Julien Mitchell
Mr Philips - Union Rep (uncredited)
Moultrie Kelsall
Ship's Captain (uncredited)
Laurence Naismith
Reginald Gordon-Wells
John Bailey
Stringer
Geoffrey Keen
Morgan Williams
Julian Amyes
Slater
Harry Fowler
Street photographer (uncredited)
Ian Wilson
Glass collector (uncredited)
Everley Gregg
Mrs Finch-Harvey - Music Club member (uncredited)
Richard Massingham
Music Society member (uncredited)
Michael Ward
Music Club member (uncredited)
André Morell
Supt. Folland
Victor Maddern
Anarchist (uncredited)
John Harvey
Scotland Yard Man
Sam Kydd
Sam - Printer (uncredited)
Lockwood West
Home Secretary (uncredited)
Anthony Nicholls
Grant Mansfield
Glyn Houston
Railway shunter (uncredited)
Jean Anderson
Woman in street (uncredited)
Dandy Nichols
Woman scrubbing porch step (uncredited)
Mary Morris
Anna Braun
Charles Lloyd Pack
Percy Ward
Julian Somers
Scottish Police Sergeant (uncredited)
Bruce Seton
(uncredited)
Peter Jones
Announcer at Music Club (uncredited)
Harry Locke
Andy - Telephone engineer (uncredited)
Liam Redmond
Cmdr. Robert Brennan
Anthony Bushell
Maj. Elliott
Patric Doonan
George Ellis
Marianne Stone
Alfie's Mother (uncredited)
Kenneth Griffith
Jimmy Ellis
Dora Bryan
Mrs. Bowers
Douglas Ives
Mr Mathews - Union Rep (uncredited)
Joan Hickson
Mrs. Ellis